body {
    font-family: 'Montserrat', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #520484; 
}

.container {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 90%;
    max-width: 600px;
}

.image-placeholder {
    width: 100%;
    height: 150px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    margin-left: 25px;
    background-color: transparent;
}

.image-placeholder img {
    max-width: 48%;
    max-height: 100%;
}

.section {
    display: flex;
    flex-direction: column;
}

.link {
    background-color: #b0e800; 
    border: 1px solid #bbb;
    border-radius: 3px;
    padding: 10px;
    margin: 5px 0;
    cursor: pointer;
    text-align: center;
    transition: background-color 0.3s;
    text-decoration: none;
    color: black;
    font-weight: 600
}

.link:hover {
    background-color: #c4efb0; 
}

.sub-link {
    background-color: #e057b3; 
    border: 1px solid #bbb;
    border-radius: 3px;
    padding: 10px;
    margin: 5px 0;
    cursor: pointer;
    text-align: center;
    transition: background-color 0.3s;
    text-decoration: none;
    color: black;
    margin-left: 10px;
    font-weight: 500
}

.sub-link:hover {
    background-color: #f58ccd; 
}

.sub-links {
    display: none;
    flex-direction: column;
    margin-left: 20px;
}

iframe {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    border: none;
}

.container {
    width: 80%; 
    margin: 0 auto; 
    max-width: 800px; 
}

.video-container {
    position: relative;
    width: 100%; 
    padding-bottom: 56.25%; 
    height: 0; 
    margin-bottom: 20px; 
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%; 
    height: 100%; 
}

.back-button {
    width: 60%; 
    padding: 10px;
    background-color: #b0e800;
    border: 1px solid #bbb;
    border-radius: 3px;
    font-weight: 700;
    display: block; 
    margin: 0 auto; 
}